Search and its Discontents
The limits of language are the limits of my world. The limits of keyword search are the limits of my web world. With 7 million new pages being added daily, those limits are becoming more and more apparent. Here is an interesting view of the possible evolution of search from Nova Spivak, CEO of semantic interest networking start-up, Twine
Oh, and a free illumin8 pen to anyone who can guess the author of the first sentence in this post (hint.. a philosopher..).
www.techcrunch.com

how about orwell
Wittgenstein
The Columbia World of Quotations. 1996.
NUMBER: 65179
QUOTATION: The limits of my language mean the limits of my world.
ATTRIBUTION: Ludwig Wittgenstein (1889–1951), Austrian-British philosopher. Trans. by D.F. Pears and B.F. McGuinness, Routledge and Kegan Paul (1961). Tractatus Logico-Philosophicus, 5.6.
BIOGRAPHY: Columbia Encyclopedia.
This seems to be important aspect to your second question. ,